Lincoln Electric SVM188-A service manual 35TROUBLESHOOTING and REPAIRF-35

Models: SVM188-A

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F-35TROUBLESHOOTING AND REPAIRF-35

TYPICAL OUTPUT VOLTAGE WAVEFORM - MACHINE LOADED

CONSTANT VOLTAGE INNERSHIELD MODE

0 volts

20V

2ms

This is the typical DC open circuit voltage waveform generated from a properly operating machine. Note that each vertical division represents 20 volts and that each horizontal divi- sion represents 2 milliseconds in time. The machine was loaded with a resistance grid bank. The grid bank meters read 650 amps at 44 VDC.

Note: Scope probes connected at

machine output terminals: (+) probe to positive terminal, (-) probe to nega- tive high inductance terminal.

SCOPE SETTINGS

Volts/Div

20V/Div.

Horizontal Sweep

2 ms/Div.

Coupling

DC

Trigger

Internal

 

 

DC-600

 

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Lincoln Electric SVM188-A service manual 35TROUBLESHOOTING and REPAIRF-35